Colloidal mill



July 4, 1950 T. P. SHAW 2,513,752

COLLOIDAL MILL Filed July 16, 1946 6 Sheets-Sheet 1 e I.v 1

IN V EN TOR.

T/ERCK POPE SHAW A T TORNEV July 4, 1950 T, SHAW 2,513,752

COLLOIDAL MILL Filed July 16, 1946 6 Sheets-Sheet 2 INVENTOR. TJERCK POPE I SHAW A TTORNEV July 4, 1950 T, R SHAW 2,513,752

COLLOIDAL MILL v Filed July 16, 1946 6 Sheets-Sheet 3 INVENTOR. TJE'RCK POPE SHAW A T TORNEY y T. P. SHAW 2,513,752

COLLOIDAL MILL Filed July 16, 1946 6 Sheets-Sheet 4 I88 say IN V EN TOR. TJERCK POPE SHAW A T TORNE Y July 4, 1950 T. P. SHAW 2,533,752

COLLOIDAL MILL Filed July 16, 1946 e Sheets-Sheet e INVENTOR. [9 TJERCK POPE SHAW ATTORNEY material inach i ne; Or o-e regions subject "to'heatingaie 7 by the proper directionof the'c'eoling riedium- -as Patented July 4, 95 0 house I "Application- July 16, 1946, Serial No. 683L920 This inventin relats tdf an" ed colloid placemeht'br rebair. I a I 1 v Andbject of 'th'cjh e'ntibnis"toibrh yidea finitarye'pin dle as sefiib li A ardily r e from the milL'With a simple m'e'thd m untmg A 69 r i eliili ii i itqi'ifi proved drive ahd 'adjust 'nenti'ineahs tor grinder whereby the parts 'mayl be aesem eclinfla j In "earlier devicee 'ef' 'this" sad I Anotherobject or the invent eiiicient coolirigeystemo c0 well as the'quantity bf the dbl ing Ine di um supplied; thereto.

A further 'bhject of-;the -'invention-?is- -to-provide means for extracting fumes'anfi'vapors raritin from materials being;groundimthemill. 1

Other features of the device? according 'to""'t1"1e present invention are-more fullfset-irth' the 'followingdescriptidm'with='i'eferen?3e to lie Ziecom anym drawings; given" hyitway ar exarmaie,

2 n ea ns for adjusting the drive "means, taken on line-2 2 of Eig. 1; v a H -13mm e ed d a l di eetio a flew- 'he n d-u r means n vem l i n c anz Fi g A-is a vertical detailed sectional view ofthe feduction assembly; H I v n i H h A Fig, ;5 -is an enlarged detailed sectional-view showing the spindle assembly of the reduction "assembly, taken on theline 55 of Fig.4; I

I Fig. 6 is a fragmentary view of the base, taken on the line 6 --6-of Fig. 2;

Fig. 7 is a plan. view partly insectiqn ghowing means for eliminating fumes, taken'on theline T1 F cl, c. j

Fig. 8 is a sectionalplan view;cf,the-cap mem- I Fig. ;9 is a sectignal plan view of the reduction unit taken on line- 9-9 of FigA The machine as illustrated inthe drawings cqn.

sists of-a base structure A, including an adjustable drivir ig'meane; aspeed-updrive means B; and a reduction assembly C. J I Y H x assembly A consists of a circular hpusing vin 1 .Qi 1 v la L; '1 it I4 mounted vertically within the housingl0,-so as to fqrm substantially a rectangular cha-inber l5. Theiplatee ll, 12 [3; and M are welded to the in f i he mus mn v n,

'Within"the segndentfqrrned by the hgueing l0 and plate l2 are two stiffener memlgei s ifi and j! j ii hieh airewelded 1101 the under :wall i": the heus'rrig "in; ancf'the buter'xirallibf theplate :2. V V h Near'the upperand outer edges of thefplate I2 are two;ofi fng s me u is which are drilledfio ol fr i 'ie cf .Zl wi'e .1 1 cres ei i e h 'i v "L ;Q$l rtl q ube member arid 23 a e: ip e' f s ii theei n n s i nd? 1 tha lqiw in in h t u ar rnx i .2 and 23 align with the openinge l 8 and i9 are faS teried by'mean by welding to S the plate -l 2. V

plates 1 l' and :l [are "twejangle irope 28 and 'zaeaeh having ne legfiiositio ned in the s-ame .horizqn tal plane so as to serveas slide rails-for r m Y r parallel to each other and spaced so as to act as guides against the horizontal legs of the slide rails 28 and 29, the plate 33 being arranged to abut the ends of the plates 32 and 34. A large central opening 35 is formed in the top plate 3!, with a smaller cut out section 35 to one side and near the edge.

Fastened to the plate v33 of the motor bracket 30, by means of bolts 31 is a motor 38 in such a manner that the shaft 39 extends vertically through the opening 35 in the top plate 31 of the motor bracket 30.

To the underside of the plate 3| and adjacent I the plates 32 and 34 are mounted motor take-up blocks 40 and 4I having threaded openings 42 and 43 therein, and being in alignment with the openings in tube members 25 and 21'. Threaded openings 44 and 45 are provided in the plate 33 near the upper and outer edges thereof so as to align with the openings provided in the tube members 22 and 23.

Adjustment of the motor'brac'ket 39 and the motor 38 is accomplished by motor take-up screws 46 and 41, which consist of a cylindrical body member 48 having one end 49 threaded, and

having an enlargement on the other end to form a flange member 50 and a head SL The take-up screws 45 and 41 when inserted through the tube -members 22, 23, 26 and 2! respectively are screwed into the thread openings 42, 43, 44 and 45- until the flange member 5ll abuts the end of the tube members 22, 23, Hand 27. Should any adjustment of the motor be required, this can be accomplished by turning the take-up screws its periphery.

The speed-up drive assembly B consists of a vertical shaft 51 supported in a substantially cylindrical housing 53, by bearings 59 and 60, and carries a pulley 6| driven through V-belts 52 by a driving pulley B3 keyed to the extended portion of amotor shaft 39 by means of a bushing 64 and an adapter 55.

The inner portion of the housing 58 is cut away to form the opening 66 for the passage of the V-belts 62. Surrounding the pulley 63 and extending through the opening 55 of the base plate 54 is a housing 61 which is fastened to the motor bracket 39 by means of bolts 68 so as to be adjusted with the motor 38 and motor bracket 39. The housing 61 has a portion adjacent the housing 59 also cut away to form an opening 69 for the passage of the V-belts 62. A cowling I9 is so formed and fastened to the housing 58 to surround the V-belts B2 and telescope through the opening 69 of the housing 61 when the housing 61 is moved by the adjustment of the'motor 38 in either direction as indicated by arrows 5 2 and 53.

The reduction assembly C of my invention is mounted on the speed-up drive housing 58 and held rigidly thereto by bolts II, and consists of a pedestal portion I2 and a cap member I3. The pedestal I2 is formed with a lower hollow cylindrical base portion I4 which is concentric with the extended portion of the speed-up drive shaft 51, and an upper hollow cylindrical portion I5, having a dividing wall I6 between them. The cylindrical portion I5 adjacent the dividing wall I6 is formed similar to a turbine by having two tubular portions I9I tangentially along opposite sides of the wall and extending in opposite directions to each other and provided with inlet openings I90 to the chamber I8. The upper hollow cylindrical portion I5 is divided into two chambers I1 and I8 by a diagonal portion I9 extending from a point adjacent the upper part of cylindrical portion I5 on one side to a point adjacent the dividing wall 16 on the other, where it extends outwardly beyond the outer periphery of the wall I5 through an opening to form the spill-way BI.

The dividing wall I6 is provided with a central open-ended tube portion 82 which extends upwardly through the chamber I8, partition I9 and chamber 11. The partition I9 likewise has an upwardly projecting tube portion 83 which is concentric to the tube portion 82, and integrally connected to it by a top wall member 94.

To provide a seat for the cap member 13, the wall I5 has an annular flange member 85 extending inwardly with an upturned lip portion 35 and provides with the wall of the tube member 83 a passage 81.

The cap member I3 is removably bolted to the pedestal I2 by bolts 88 and comprises an upstanding cylindrical wall 89 closed at the top by a horizontal wall 90 the upper portion of cap member I3 is formed similarto a turbine by having two tubular portions I99 tangentially along opposite sides of the wall and extending in opposite directions to each other and providing outlet openings I88 [from the chamber 97; the top wall 90' has a central threaded opening Si in the boss portion 92. Integral with the top wall 90 and extending downwardly from the boss portion 92 is a hollow tubular portion 93 which is stepped outwardly at 94 so as to form on its lower face a seat 95. An annular flange 96 is integral with the outer wall 89 and the tubular portion 93 so as to form with the top wall 9| a liquid chamber 91.

When the cap member I3 is bolted in place to the pedestal '12, it forms a grinding chamber 98 which is opened at the top through the tubular member 93 and the opening 91, and through the .bottom by the passage 81', chamber I1 and opening 80,'

For the purpose of mastication of the material bein treated, a unitary spindle assembly, generally designated at 99, is mounted in the pedestal I2, being inserted in the opening provided in the tubular member 82, and having a shaft I90 which cooperates with a splined adapter I20 and coupling I9I to be driven by the speed-up shaft 5'Iby means of keys I92. An impeller I91 is mountedon the upper end of the shaft I00 and held rigidly thereto by lock nut I42, to aid in delivering material to the grinding chamber.

An important feature of my invention resides in providing a unitary spindle assembly 99 that comprises a positive two-way vertical adjustment of therotor grinder through the access opening I63 while the machine is in operation, and is accomplished byhaving a tubular bearing liner IOI with external threads I92 formed on its lower end, and a radial flange member I03 with dowel =*formedz-on itszlowerzenrlrionmooperationtwithzthf the bearing liner -I0I- restingrename internal threads I0Imnuthenbearin mere The tadjustingkiasleeize sI95-1has1anzadial efiange member I 811017116115 omitazlowerrend Mtlrnpenings .4108 extendingi'radiall-yi from'ziitsr periphery.

The internal rboreriofiithe'aadjusting:zsleere: d is stepped;so as totzcform shouldered 0f9aand: I: I 0 and an i internal lthreadedtportion 5:14 I ati-iitsmpper end. Insertable intotthezibone the adjusting sleeve I 05, with ;-a l'lightcipnessedmdt i a igrease deflector :II2, twhichszengages andrseatsl slower-shoulder;- I: I0. zThezgiteasezd-efleetorel I22has *formed on the :lowersen'd ofzitssioutenwall cumiferential groove I: larand axiallyrformed slots II4 which :extend :f-rom::.the groove Iaifitto: the

idndthe upper-end of theig-reasetdefleeton sosa's 1: form with the ,:internal'; bore: itheriadjusting -:;-s1eeve I05, v grease du ets :I I5. shaft i d110 iscrotatably supported in "thegadjusting isleeveomkbya bearmercial make consisting: of rballsp=innera andsnuter races. The inner arace: f zithei ibearing IIL'HL'I Biengages a downwardly presented .ashoulder vbl t-9 shoulder I i1by aagtu'bularxmemben I 20a; tthrough the cooperation ofrandnternalathread III formed the tubular member it2'6i cooperating-with the intermediate threaded itporti'on :iormed on the shaft "I00.

The shaft assembly fisith'eld 1113131266 inlthe a'ddusting-sleeve i105 sbyi aagreaseiretaineri fi-9 0f the comb :type, whichric'lamps thetouterrace ofbearing I I 8 against the-upwardlyipriesented shoulder I 09 of theiadjustingisleeve If05 byithe 'cooperati'o'n oi the external: threaded 'portion lfioiformedion the grease retainer M 29 lim'hhlthe' r-iir-iternal threaded :portion H I aformed ioniithe adjusting .sleeve I05. The tubularzmember-fzmfiihas oni its upper end a radialiflange: memberiilfilizithat has a horizontal seat .132JfDImEdLiIOIIZ51135311131381 side, :and'on thealowerside ;I33;1ar.e.:formed two annular wall memb'ersz;I;34:-=and '\Ir35tr.:arranged -c'oncentric with ithe itubiilait-imember I26. The two annular wall members I34 and I35 are so arranged that they cooperate *with the upper end vportion I38 of the adjusting sleeve -.I05 v :and the upper end portion I31 of thengrease retainer 129 to form a labyrinth. The periphery. of. the flange member I3I is formed with a downwardly marginal skirt I38 and an upstanding lip portion I39.

The unitary spindle assembly 99 may be -mounted in theopen-ended tube member82 0f :the pedestal 'I-2,-withthe fiange igidly locked tothe-pedestetl -2'- against-longitudinal movementby a look washer I42 -a nd a lock nut I4'I by the pooperation 0f the internal threads I 41 formed in the Jock-nut with the-external threads I 02 formed on the bearing liner Iiil. Dowel pins I43 are inserted in the openings I04 to retain the bearing liner IOI from rotation within the tube member 82.

A novel means of lubrication is provided in the unitary spindle assembly 99, by providing an annular chamber I44 between the inner wall I45 of the adjusting sleeve I05 and the shaft :a'daptingitthe assembly toreontain iubtieantity ransuitable...admitting fi'ttingifmfi mounteddn the athreaded-lopening I llin the adjusting sleeve m5, :andualigm'd with tthe-zgroove liI 3= formed in the 'gI'eaSeiidfle'CtOI IlIIIiZ. IIEOQEttBd inr the -:annular rchamber I44 .-..and depending 5 from the grease pickeupgring .1 24 are Ltwo :grease: pick-uptub'es 4:1?43;:theiloweroends of which are openedv in th'e direction of @rotation 1 OfLthe Shaft IM to. deliver :lubric antiefromi the annular chamber M4 to lithe .eupper ibearing "1M8. fAtsligh-t .releararree' l lfi is provided between the grease defiector- II h-and ithezishaft I00 tori sthegpassage of :lubricant" from ith'eiannular i chamberi I 44 Ltothe lower 1 self scalling bearing; I liIsiwhere it .is confined by this self :tsealingrbearing-iil Ie'I. :Lubricant isiprevented irom iiowingzonotoa the: spillway 8 l ibyizthe-oil grooves :zI49zrzformed inttheriboreof grease "retainer I5 :-,and the labyr-inth formed: by the lower s'ide -I9 3 20f! the :flange :m'ember. I33 I (Int orderito I allowan easy adjustment =iof: the rotor grinder I 5'0 within tthesibea-rin'g liner I-0JI openings I92: are provided iinithe adjusting ;sleeve 1 t0 5 fthat. communicates with thez'greaseiduetfl I25 rand allows lubricant to snow: to :a groove ikt'9-2a fiormed in :the bearing iliner :I'flI.

rotor .grinder- 1'50; is rz-mounted on the shaftpand 'seats onithe radial fiange member Itl in -the :grinding chamber 98i an'd has a frusto-conical itop portion IJ-5I that projects upwardlytmcoop- .erate vzithzandn'clined face I 52 0f a statongririder 153, that is 'deinountabl-yiandnrigidlyheld against ethe seat .95 .in-itheigrinding nchamber 98 by an annular :ring I 54' boltedi to the'rcap' by b'olts' l 55. The-rotor grinder .isffixeditoxtheshait by nut I43. v:As armeansitoiprevent the:- adjustingfisleeveimt iii-rum: accidental rotation; azset :sorew iii is :pro- :vided with an elongated shank 51 --which" 1eads i'through al-ignedisopenings I58 and I5'9 that are formed in the-xwalls flfi'mnd .02 ofzztheiipedestal 1212,;and through opening I60 :in the be'aring sliner I.0I. :Theopening Ii58; -is threa'ded'fto cooperate '-'with a :threaded portion :I'fil on'ithe shank l51. -When (the! setiscrew' I56 isrtin-locked "positionfithe innerxend "I62 abu'ts against the side wall of -the ia'djustingzsleeve 74205.

itrzwill mow be r-apparent nirnmiilthe foregoing description :xthataa uniqueiunitary spindle Lasi-senibly: i99ehastrbeen :devi sedainvtwhidhziarpositive twoeway vertical adjustmentzcan bemade of the :rotor grindennbyh-disengaging tithe :setwscre-w I 56 :andt'iinser'ting a atoblt'through' the acc'e'ssiopening .:-I 63:- rinto openings i108 'saaiid:turning the"adjust- :ingrsleeve I10 Sainzzxthe rziirect'ron:in'dicated' by the rar-rewfiI-fi4 totaafiectra:yerticaliadjustment of. the shaft I00 and rotor .griniier iI'50 -upwardly, tthrough thershoulder :zli091-1on theadjusting sleeve :ailiiabutting the 'b'eairing 'IIIYB. fiByxth'e rotation of .;theadjusting s1e'eve'- t05iin the 'i'direction indireatdrby Itheaarmw :I2Ii5;::theiishaft' I00 and" rotor grinder 1 5 I1 sarerzadjusted-wertically downward-by 'thetgrease retainer I'ZBazabuttingithe bearing f8. Tlozseliminateopbnoiious mars: being-expelled 'fromnthezmillduringiithezi-treatment :fo'i i'difiereiit vIiypesrof matetializlqorovideia; imean's iforaextra'otling -umes.;an'd tvaporsi from tthe mill hy an ejector 3111821115 II-I56. liner ejector..means KI S drcompi is es a :-*hub SE'mGIIIbBI n16 liifantenednto ith'e :pul le-y adapter 65 by means of bolts I68 and having radially extending blades I69 that are arranged in vertical planes; the periphery of the blades have slots I I0 to partly encase a nozzle "I which lies tangential to the blade I69 in the slots I10 by projectin into the opening I12 of the housing 01 and fastened I00 and 7 to the housing by screws I8I. The outer end oi the nozzle III is connected to a gooseneck I'I3'by a flexible hose I14 so as to be in communication with the opening I75 that is formed in the pedestal I2 above the spillway Ill. The opening I15 is partially separated from the chamber 11 by a vertical baflie I16. The housing 61 is formed substantially circular but has an elongated tubular portion I'Il tangentially along one side, to provide for the openings I12 and I18. An opening is provided in the top of the housingGI for the admission of air into the housing through a screen I80.

When the motor 38 is operated, the blades I69 rotate in the direction indicated by the arrow I82, creating a suction at the inner end of the nozzle III to withdraw fumes and vapors from the mill through the opening I75, gooseneck I73, and flexible hose I14. Simultaneously, air is taken in through the openin I89 and mixed with the fumes and vapor and discharged through the opening I18 and discharged pipe "9.

My invention further provides a novel liquid cooling chamber which surrounds the grinding chamber 98 to maintain a more constant temperature and eliminate excessive expansion of the parts, due to heating during operation, thus .maintaining the desired spacing of the grinding elements as well as preventing excessive wear. The chamber 91' is connected to the chamber '18 .by gland connections I83 which are fitted into openings I84 in the wall 96 of the cap member I3 and projectinto aligned openings I85 formed :in the wall 85 of the pedestal 12 so that fluid may circulate from one chamber to the other. A

gasket IBB surrounds the gland connections and I fits into a counterbore I81 to act as a seal. The lower portion of the pedestal I2 being formed similar to a turbine and cooling liquid supplied tangentially through the openings I98, from a source not shown, forces the liquid to circulate in a whorling manner through the chamber 18 thereby scouring the walls of the chamber to maintain a more even temperature. The liquid courses its way upward through the gland connections I83 to the chamber 91 and because of its construction the liquid is forced to circulate in a whorling manner to be discharged tangentially through the discharge openings I88.

In order to extract the rotor grinder I58 from its seat I32, a circular groove I94 is formed in the flange member I3I into which a ring I95 is inserted and by the pressure that can be applied by bolts, not shown, inserted into the threaded openings I96 that communicate with the groove I94, the rotor grinder I58 is readily and easily raised from its seat I32.

In the foregoing description I have described a specific horizontally adjustable drive means capable of driving both a speed-up drive means and a fume ejector means; the speed-up drive means in turn drives a rotor grinder in the reduction portion of the mill through a coupling and splined adapter. The rotor grinder is mounted on a shaft journaled in a unitary spindle assembly that provides a positive two-way adjustment of the shaft and a lubricating chamber, but I do not wish to limit myself to the exact details of construction set forth as they may be modified inany manneri compatible with the principles of the invention.

The invention may be used for grinding dry materials as well-sas wetv materials. Also if a materialwhich is to be ground must be heated, the passages through which the cooling fluid flows may be used for flowing a heating fluid, thus heating the material tothe desired temperature.

I claim as my invention:

1. In a colloid mill having a base including a tubular portion: a. vertically adjustable rotor shaft assembly comprising an adjusting sleeve; a plurality of'bearing elements carried by said sleeve for rotatably supporting said rotor shaft at spaced points; a tubular lubricant deflector around said shaft within said sleeve extending between the bearing elements; lubricant supply means for admitting lubricant to the interior of said sleeve adjacent one of said bearing elements; a channel in the exterior surface of said deflector-for conducting admitted lubricant along the interior'of the sleeve to a point adjacent another bearing element; a bearing liner adapted to be adjustably assembled around said adjusting sleeve after said .bearing elements have been mounted on said rotor shaft and placed in said adjusting sleeve, said assembly being insertable as a whole into said tubular portion; and means securing said bearing lining against relative axial movement with respect to said tubular portion.

2. In a colloid mill having a base including a tubular portion: a vertically adjustable rotor shaft assembly comprising an adjusting sleeve; a plurality of bearing elements carried by such sleeve for. rotatably supporting said rotor shaft at spaced points; lubricant supply means for admitting lubricant to the interior of said sleeve adjacent one of said bearing elements; a tubular lubricant deflector around said shaft within said sleeve extending between the bearing elements and cooperating with said sleeve to form a lubricant flow passage from said lubricant supply means to a point adjacent another bearing element; a bearing liner adapted to be adjustably assembled around said adjusting sleeve after said bearing elements have been mounted on said rotor shaft and placed-in said adjusting sleeve, said assembly being insertable as a whole into said tubular portion; and means securing said bearing lining against relative axial movement with respect to said tubular portion.

- TJERCK POPE SHAW.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Richardson Nov. 27,

Certificate of Correction Patent No. 2,513,752

July 4, 1950 TJEROK POPE SHAW It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:

Column 4, line Z4, for sle ead sleeve 105 column 5, line 34, for 126a after line 68, insert the following June 18, 1946 said Letters Patent should be read as correcte may conform d (1 above, so that the same Patent Office.

eve 10 r read 126; column 8, list of references cited,

2,402,170 Mud THOMAS F. MURPHY,

Assistant Oommzlvsz'oner of Patents. 

